To strike; -- with off. [Obs. or Prov. Eng.] "Swap off his head!" Chaucer.
To exchange (usually two things of the same kind); to swop. [Colloq.] Miss Edgeworth.
To fall or descend; to rush hastily or violently. C. Richardson (Dict.). All suddenly she swapt adown to ground. Chaucer.
To beat the air, or ply the wings, with a sweeping motion or noise; to flap.
A blow; a stroke. [Obs. or Prov. Eng.]
An exchange; a barter. [Colloq.] Sir W. Scott.
Hastily. [Prov. Eng.]
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